Welcome to the DoItYourself Forums!

To post questions, help other DIYers and reduce advertising (like the one on your left), join our DIY community. It's free!

flywheel is off


WML13's Avatar
Member

Join Date: Apr 2003
Posts: 1,300
OH

06-05-03, 02:17 PM   #1  
flywheel is off

Well I stumped the pros with a 1967 Briggs engine that I couldnt get the flywheel removed from when the engine blew. After breaking the bolts on 3 different types of Briggs and harmonic balancer pullers, I took it to a friend who does work on large diesel trucks and had him hook up his custom gear puller to it. This puller had wings that gripped the outside of the flywheel and pulled from two points on the flywheel, rather than from the threaded holes in the center of the flywheel. It was heated extremely hot and torque from the puller screw bent the puller somewhat. Even at that, it took a huge blow with a sledge hammer to free the flywheel. It came off intact however, but I know have most of the magnets that line the inside of the flywheel loose now. What is the recommended way to reseal these magnets to the flywheel?

 
Sponsored Links
Sharp Advice's Avatar
Admin, Forums Host & Manager

Join Date: Feb 1998
Posts: 10,440
CAL

06-05-03, 07:17 PM   #2  
Hello: WML13

Once the magnets come out of the flywheel or become loose in the flywheel, the only solution is to replace the entire flywheel.

There is no other means I know of to secure the magnets to the flywheel. Centrifugal force will fling the magnets out.

It's almost impossible to even imgine how the flywheel could have been that difficult to remove. Personally never had a flywheel frozen onto the shaft like the one you described.

Nor one that had to be beaten with a sledge hammer to remove. I'm now wondering what shaft thread damage resulted and what internal engine damage resulted from that type of brute force???

Regards & Good Luck.
Web Site Host & Small Engine Forum Moderator. "Accurate Power Equipment." Small Engine Diagnostics Services & Repair.

 
mower17's Avatar
Member

Join Date: Feb 2003
Posts: 365

06-05-03, 08:16 PM   #3  
Glad to hear you were able to remove it. I once started to attemp to remove a flywheel with a large puller like you described that was made for diesel engines. My teacher quickly stopped me and said that he has seen things brake by pulling from the outside. He said that the flywheel is built strong on the outside, however, near the center, it is a lot thinner, hints the reason for the flywheel puller. Sounds like you had one tuff time with the flywheel. I have never heard of one that was stuck that bad.

 
cheese's Avatar
Forum Topic Moderator

Join Date: Jul 2001
Posts: 16,570
GA

06-05-03, 09:45 PM   #4  
I agree..replace it. It is now an unsafe flywheel, because of the heat, impact of blow, and loose magnets. The cast iron flywheel could now be warped, stressed, and/or cracked. You don't want a stressed flywheel fracturing and flying apart at 3500 rpm.

I also have never seen one stuck that badly. I wouldn't doubt that the crankshaft is either twisted or bent too.


"Who is John Galt?" - Ayn Rand (Atlas Shrugged)

God bless!

 
WML13's Avatar
Member

Join Date: Apr 2003
Posts: 1,300
OH

06-06-03, 04:20 AM   #5  
Flywheel

Well I now have extreme internal AND external damage, so I think my best course of action is to relagate this engine to the recycler and buy a new one. Thanks for your comments!

 
cheese's Avatar
Forum Topic Moderator

Join Date: Jul 2001
Posts: 16,570
GA

06-06-03, 01:51 PM   #6  
lol...sorry to hear it. Glad we could help, but I wish the outcome were better.


"Who is John Galt?" - Ayn Rand (Atlas Shrugged)

God bless!

 
Search this Thread